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TI-2018-10463 Aliases CVE-2018-14598GHSA-8crp-qc6q-x3mh

An issue was discovered in XListExtensions in ListExt.c in libX11 through 1.6.5.

Priority MEDIUM 40CWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
None · None · High
Fix status
Partial Red Hat: 8 fixed, 1 without a fix

Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat.

Summary

An issue was discovered in XListExtensions in ListExt.c in libX11 through 1.6.5. A malicious server can send a reply in which the first string overflows, causing a variable to be set to NULL that will be freed later on, leading to DoS (segmentation fault).

Why it matters now

EPSS 0.04175 90th percentileScored 2026-11-07
Fix Partial Red Hat: 1 advisoryRed Hat: 8 fixed, 1 without a fix

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 7

CPEVersionsRoleVendor
cpe:2.3:a:x.org:libx11:*:*:*:*:*:*:*:*up to 1.6.5Vulnerablex.org
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:*12.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*14.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*16.04VulnerableCanonical
cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*18.04VulnerableCanonical
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*8.0VulnerableDebian
cpe:2.3:o:fedoraproject:fedora:28:*:*:*:*:*:*:*28VulnerableFedoraproject
  • cpe:2.3:a:x.org:libx11:*:*:*:*:*:*:*:* Versions up to 1.6.5 Vulnerable ·x.org
  • cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:esm:*:*:* Versions 12.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* Versions 14.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* Versions 16.04 Vulnerable ·Canonical
  • cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* Versions 18.04 Vulnerable ·Canonical
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* Versions 8.0 Vulnerable ·Debian
  • cpe:2.3:o:fedoraproject:fedora:28:*:*:*:*:*:*:* Versions 28 Vulnerable ·Fedoraproject

Remediation

Red Hat 1 advisory

  • RHSA-2019:2079 Released 2019-08-06 · Red Hat rating Moderate
    Xorg security and bug fix update
    • Red Hat Enterprise Linux Client (v. 7) gdm-1:3.28.2-16.el7, libX11-1.6.7-2.el7, libX11-common-1.6.7-2.el7 +10
    • Red Hat Enterprise Linux Client Optional (v. 7) gdm-devel-1:3.28.2-16.el7, gdm-pam-extensions-devel-1:3.28.2-16.el7, libxkbcommon-devel-0.7.1-3.el7 +8
    • Red Hat Enterprise Linux ComputeNode (v. 7) libX11-1.6.7-2.el7, libX11-common-1.6.7-2.el7, libxkbcommon-0.7.1-3.el7
    • Red Hat Enterprise Linux ComputeNode Optional (v. 7) gdm-1:3.28.2-16.el7, gdm-devel-1:3.28.2-16.el7, gdm-pam-extensions-devel-1:3.28.2-16.el7 +16
    • Red Hat Enterprise Linux Server (v. 7) gdm-1:3.28.2-16.el7, gdm-1:3.28.2-16.el7.ppc, libX11-1.6.7-2.el7 +21
    • Red Hat Enterprise Linux Server Optional (v. 7) gdm-devel-1:3.28.2-16.el7, gdm-devel-1:3.28.2-16.el7.ppc, gdm-pam-extensions-devel-1:3.28.2-16.el7 +12
    • Red Hat Enterprise Linux Workstation (v. 7) gdm-1:3.28.2-16.el7, libX11-1.6.7-2.el7, libX11-common-1.6.7-2.el7 +13
    • Red Hat Enterprise Linux Workstation Optional (v. 7) gdm-devel-1:3.28.2-16.el7, gdm-pam-extensions-devel-1:3.28.2-16.el7, libxkbcommon-x11-devel-0.7.1-3.el7 +7

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Enterprise Linux 6AffectedNo fix planned: Will not fix
Red Hat Enterprise Linux Client (v. 7)Fixed RHSA-2019:2079
Red Hat Enterprise Linux Client Optional (v. 7)Fixed RHSA-2019:2079
Red Hat Enterprise Linux ComputeNode (v. 7)Fixed RHSA-2019:2079
Red Hat Enterprise Linux ComputeNode Optional (v. 7)Fixed RHSA-2019:2079
Red Hat Enterprise Linux Server (v. 7)Fixed RHSA-2019:2079
Red Hat Enterprise Linux Server Optional (v. 7)Fixed RHSA-2019:2079
Red Hat Enterprise Linux Workstation (v. 7)Fixed RHSA-2019:2079
Red Hat Enterprise Linux Workstation Optional (v. 7)Fixed RHSA-2019:2079
Not affected: 2 products
  • Red Hat Enterprise Linux 5
  • Red Hat Enterprise Linux 8

Timeline

  1. 2026-10-02 Threatist record created from CVE-2018-14598
  2. 2026-10-03 Alias added: GHSA-8crp-qc6q-x3mh

References

Patch 2

Advisory 8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences